Perimeter- The perimeter of a closed plane figure is the distance around the figure. Add up all the sides.

Area- The area of a closed plane figure is the number of non-overlapping squares of a given size that will exactly cover the interior of the figure. (Length x Width)

Perimeter- distance around the closed figure

Postulate: The Sum of Areas - if a figure is composed of non-overlapping regions A and B, then the area of the figure is the sum of the areas of regions A and B.

The perimeter of a rectangle with the base and the height is given. FORMULA: 2b + 2h = perimeter

The area of a rectangle with the base and the height is given. FORMULA: A=bh

The formula for the area of a triangle is A=half of base times height

The formula for the area of a trapezoid is base one + base two times height divided by two

The formula for parallelograms is base times height

Area of a circle is pie times radius squared

Circumference of a circle is 2pie times radius

Equidistant:
same distance.
Distance: the shortest length ( from a point to a line perpendicular segment that connects the point and line)